diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/ralloc.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/src/ralloc.c b/src/ralloc.c index 0a06d840843..50b1af8b155 100644 --- a/src/ralloc.c +++ b/src/ralloc.c @@ -506,8 +506,20 @@ r_alloc_init () extra_bytes = ROUNDUP (50000); page_break_value = (POINTER) ROUNDUP (break_value); + + /* The extra call to real_morecore guarantees that the end of the + address space is a multiple of page_size, even if page_size is + not really the page size of the system running the binary in + which page_size is stored. This allows a binary to be built on a + system with one page size and run on a system with a smaller page + size. */ + (*real_morecore) (page_break_value - break_value); + /* Clear the rest of the last page; this memory is in our address space even though it is after the sbrk value. */ + /* Doubly true, with the additional call that explicitly adds the + rest of that page to the address space. */ bzero (break_value, (page_break_value - break_value)); + virtual_break_value = break_value = page_break_value; use_relocatable_buffers = 1; } |